Am a medic. Had a similar call, but dude ended up having a rare tumor on his pancreas called and insulinoma. They produce and hold a bunch of insulin and can occasionally rupture and flood your system with insulin. Ofcourse we didn’t Know he had one at the time.
We had a non Diabetic PT that we found with a glucose that just read low. So 30< with our glucometers. Dumped 100 of d20 into him with absolutely no changes. Ended up infusing 4 more bags of d20 into him during transport. Got him up to like 80 and then watched him become unresponsive again 5 min later. Checked again and found it to be back to 40. He was in a room a few min later. Normally Im glad we don’t cary d50 anymore that shit was like using a sledge hammer to hammer in a tack nail. But this was the one time d20 wasn’t cutting it.
Anyways, glad you are alive. Shit can be scary.
AFAIK angina comes from the Latin word angere which means to suffocate.
Angina pectoris being suffocating chest pain, often accompanied by shortness of breath.
And Ludwig angina litteraly suffocating a person via swelling.